<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
</head>
<body>
     <h2 th:text="${message}"></h2>
       这里是主界面,欢迎用户:<span th:text="${username}"></span>   <br>
     <a th:href="@{/toupdate(username=${username})}">去更新信息界面</a>
</body>
</html>
